class Main_Window : public Fl_Window{ ///Main_Window inherits of Fl_Window
public:
	Fl_Input* input[3];
	Fl_Output* out[3];
	Fl_Button *Button_ok,*Button_sair;
	
	//Constructor
	Main_Window(int w,int h,const char *name=0) : Fl_Window(w,h,name){
		input[0] = new Fl_Input(50,50,130,20,"Nome");
		input[1] = new Fl_Input(50,75,70,20,"Tel");
		input[2] = new Fl_Float_Input(50,100,70,20,"Float");
		Button_ok = new Fl_Button(30,150,70,30,"OK");
		Button_sair = new Fl_Button(170,150,70,30,"Sair");
		
		Button_sair->callback(Button_sair_callback);
		Button_ok->callback(Button_ok_callback,this);

		end();
		show();
	}
private:   //private members

	static void Button_ok_callback(Fl_Widget *w,void* v){
		((Main_Window*)v)->catch_value();

	}
	static void Button_sair_callback(Fl_Widget *w,void* v=0 ){
		exit(0);
	}
	static void Button_close_callback(Fl_Widget *w,void* wi){
		w->~Fl_Widget();  //destrutor do Widget
		((Fl_Window*)wi)->~Fl_Window();  //destrutor da janela win(saída)

	}
	void catch_value(){
		Fl_Window *win = new Fl_Window(300,200,"Results");
		win->begin();
		out[0] = new Fl_Output(50,50,130,20,"Nome: ");
		out[1] = new Fl_Output(50,75,70,20,"Tel: ");
		out[2] = new Fl_Output(70,110,100,20,"New Float: ");
		Fl_Button *Button_close = new Fl_Button(20,150,50,20,"Close");
		win->end();
	
		Button_close->callback(Button_close_callback,win);
		
		input[0]->clear_changed();
		input[1]->clear_changed();
		
		out[0]->value(input[0]->value());
		out[1]->value(input[1]->value());

		double x =  atof(input[2]->value());
		x *= 2;
		char c[20];
		gcvt(x,10,c);
		
		printf("%s",c);
		out[2]->value(c);
		
		win->show();

	}
};

void main(){
	Main_Window *window = new Main_Window(400,400,"Input Window");
	Fl::run();
}